The Simpson 4X Beam Column Cap HDG Quick-Install w/SDS Screws is a heavy-duty structural connector engineered by Simpson for reliable column-to-beam connections on top of steel columns and posts. Its legless design makes it purpose-built for field-welded attachment, delivering a precise, low-profile fit where a conventional footed cap would not be appropriate. The extended seat distributes beam loads across a greater bearing surface, and the included Strong-Drive SDS Heavy-Duty Connector screws provide a fast, secure fastening method that engages more net section area than standard through-bolt alternatives. Finished in Hot Dip Galvanized coating, this column cap is ready for exposed and moisture-prone environments without additional treatment.

Key Features

• Legless, field-weld design - attaches directly to steel columns and posts without legs getting in the way, making it ideal for tight or custom structural configurations where standard column caps cannot be used.
• Extended bearing seat - projects beyond each side of the column to distribute beam loads over a wider surface area, reducing point stress and reinforcing the overall connection integrity.
• Quick-install with Strong-Drive SDS Heavy-Duty Connector screws - the included screws engage a greater net section area of the column compared to traditional bolt attachments, speeding up installation without sacrificing holding strength.
• Hot Dip Galvanized finish - provides robust corrosion resistance, making this cap a dependable choice for outdoor, exposed, or high-moisture structural applications.
• 7 gauge steel construction - delivers the material thickness required for heavy structural beam-to-column connections, supporting demanding load transfer requirements.
• Made in the United States - produced domestically to consistent quality standards expected in professional structural applications.

Why This Product

• Designed specifically for steel column applications - the legless, field-weld attachment method means this cap integrates cleanly with steel columns and posts in a way that footed or post-base style connectors simply cannot, giving contractors a targeted solution for this common structural condition.
• Faster installation without compromising performance - the Strong-Drive SDS Heavy-Duty Connector screws included with this cap eliminate the need for drilling through-bolt holes, cutting labor time on the job site while maintaining a high-strength fastener connection.
• Built to last in tough environments - the Hot Dip Galvanized finish goes beyond standard coatings to protect against corrosion in exposed, outdoor, or moisture-prone settings, reducing long-term maintenance concerns for the structure.
• Extended seat for superior load distribution - rather than concentrating beam loads at a single point, the extended bearing seat spreads force across a wider footprint, supporting safer and more stable beam-to-column connections in heavy structural assemblies.

Specifications

• Model Number: CCOQ4-SDS2.5HDG
• Beam Width: 3-1/2 in.
• Length: 11 in.
• Height: 7 in.
• Material Gauge: 7 Gauge
• Finish: Hot Dip Galvanized (HDG)
• Country of Origin: United States

Approved Applications

• Column-to-beam connections on top of steel columns and posts
• Field-welded structural connections requiring a legless column cap design
• Applications requiring load distribution from beam to column via extended bearing seat
• Structural connections where a low-profile fastener is preferred over standard through bolts
• Exposed or moisture-prone environments requiring a Hot Dip Galvanized finish

What's Included

• (16) 1/4" x 2-1/2" Strong-Drive SDS Heavy-Duty Connector screws

Options

• For end conditions, see ECCOQ.
• For rough-cut lumber sizes, provide dimensions.
• Other custom column caps are available. Contact us for Configurable Options and Special orders

Related Products

• - For end conditions requiring an end column cap solution.

Frequently Asked Questions

What size beam is this column cap designed to fit?

The CCOQ4-SDS2.5HDG is designed for 4x beams with a beam width of 3-1/2 in. The overall dimensions of the cap are 11 in. in length and 7 in. in height, making it suited for heavy structural beam-to-column connections.

How is this column cap attached to a steel column?

This column cap features a legless design that is intended for field-welded attachment to steel columns and posts. Once welded in place, the beam is then secured using the included Strong-Drive SDS Heavy-Duty Connector screws, which engage a greater net section area of the column compared to a standard bolt attachment.

What is the finish on this column cap, and is it suitable for corrosion-prone environments?

The CCOQ4-SDS2.5HDG is finished with a Hot Dip Galvanized (HDG) coating, which provides enhanced corrosion resistance. This makes it well-suited for demanding environments where exposure to moisture or corrosive conditions is a concern.

What advantage do the SDS screws offer compared to standard through bolts?

The Strong-Drive SDS Heavy-Duty Connector screws offer a lower profile than standard through bolts and attach to a greater net section area of the column than a standard bolt attachment. The cap also includes diamond holes to assist with temporary positioning during installation, helping to streamline the overall installation process.